A text-book of dental histology and embryology, including laboratory directions . ing one larger than asmall glass, fill the glass with water, and place the bulb on this is placed in a sunny window, in a few hours littlerootlets will be seen stretching down into the water. Therootlets of a sprouting chestnut also make very good material(Fig. 183). If these are embedded in paraffin, the develop-ment of the cells and the formation of their supporting wallscan be observed. The young cells near the tip will be found INTERCELLULAR SUBSTANCES 239 to be a mass of granular protoplasm, with a lar
A text-book of dental histology and embryology, including laboratory directions . ing one larger than asmall glass, fill the glass with water, and place the bulb on this is placed in a sunny window, in a few hours littlerootlets will be seen stretching down into the water. Therootlets of a sprouting chestnut also make very good material(Fig. 183). If these are embedded in paraffin, the develop-ment of the cells and the formation of their supporting wallscan be observed. The young cells near the tip will be found INTERCELLULAR SUBSTANCES 239 to be a mass of granular protoplasm, with a large nucleusin the centre, and a thin wall of cellulose which is the cellorgan of support. As the cell increases in size, vacuolesappear in the cytoplasm which become larger and vacuoles are filled with watery fluid which is not apart of the cytoplasm. If the cell remained a solid mass ofcytoplasm, an enormous amount of food material would berequired, which would be out of all proportion to the workwhich the cell is to perform. The vacuoles increase in size Fig. 183.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectteeth, bookyear1912
